elizabeth cook says it's possible thanks to an app. >> reporter: if you plan on navigating the city on two wheels, don't get too attached. ever had your bike stolen? >> in san francisco, yes. a couple of times of. >> probably about four bikes over the last 12 years. >> reporter: according to sfpd, 603 bikes were reported stolen last year. >> there are probably 630 stolen since we started talking. >> reporter: the people at price anomics came up with a program who help victims track down their wheels. >> the only really effective way to get your bike back is to look for it and get it back. >> reporter: the site is aptly called the stolen bike finder. just enter in a description of your bike and it will send you an alert if a similar model is found for sale online. >> what they do is throw them in vans and ship them to seattle or l.a. and you don't know where it's going to be so we check everywhere. >> reporter: it's only been up a few days and it's apparently working. >> people talking on forums how they found their bike using it. >> reporter: one bike messenger we talked to is skeptica